Bug 24378: Database update to rewrite notice if left unchanged

Bug 24378: Database update to rewrite notice if left unchanged

The database update makes the same changes as done by
Andrew on the old database entry. We check for full sentences
left unchanged to minimize issues with changes made by the library.

Test plan of first patch applies.

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>